eu-LISA monthly N.SIS/N.Eurodac availability, error rate, and latency logs
Dear European Agency for the operational management of large-scale IT systems in the area of freedom, security and justice,
Under the right of access to documents in the EU treaties, as developed in Regulation 1049/2001, I am requesting documents which contain the following information:
aggregated and anonymised monthly statistical data regarding the technical performance, usage, and Service Level Agreement compliance of the Member States' National Interfaces connecting to the central EU IT systems (specifically: SIS II / Recast, Eurodac, and VIS).
To support my academic research, I kindly request this data broken down by Member State and by month, covering the period from 1 January 2018 to the most recent available date. Specifically, I am looking for documents or database extracts containing the following metrics:
1. System Availability & Downtime: The monthly uptime percentage (%) and the total duration of unplanned downtime/outages attributable to each Member State's National Interface.
2. Latency & Technical Errors: The monthly average or median system response time (latency) for queries and data uploads, alongside the volume or percentage of dropped connections, timeouts, or technical transaction errors.
3. Data Quality & Biometric Rejection Rates: The monthly volume or percentage of data insertions (e.g., fingerprint enrollments) rejected by the Central System due to poor data quality, formatting errors, or Failure to Enroll (FTE).
4. Transaction Volumes: The total number of searches/queries performed and new records created/uploaded per month by each Member State (to serve as statistical denominators).
Yours faithfully,
Tao Zou
Dear Mr. Zou,
Thank you for your email and interest in eu-LISA.
In your email dated 20 February 2026, you expressed your intention to submit a request for access to documents of eu-LISA under Regulation (EC) No 1049/2001.
Before we proceed with the request, and in accordance with Article 5(3) of eu-LISA’s Management Board Decision 2022-090 (hereinafter Decision No 2022-090), all initial applications must be accompanied by an identity document or, in the case of legal persons, the proof of registered office along with the proof of the link between the individual presenting the application and the legal person.
Kindly note that, as per Article 6(1) of the Decision No 2022-090, only applications presented in compliance with Article 5 are registered and further processed.
Therefore, you are kindly requested to provide an electronic copy of an identity document via email to [eu-LISA request email] within three (3) working days, that is by 27 February 2026. Kindly note that 24 February 2026 is considered as a public holiday at eu-LISA.
If you do not contact the Agency within this timeframe, your request will be considered as closed and will not be further processed.
Thank you for your cooperation.
Best regards,
PAD Team
Legal Sector
Vesilennuki 5,
10415 Tallinn, Estonia
[email address]
www.eulisa.europa.eu
eu-LISA / European Union Agency for the Operational Management
of Large-Scale IT Systems in the Area of Freedom, Security and Justice
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Dear EULISA PAD,
Thank you for your reply.
I have just sent the requested copy of my identity document directly to your dedicated email address.
I look forward to your confirmation of receipt and the official registration of my request.
Yours sincerely,
Tao Zou